Can a person use a quadratic formula to isolate the square in the process of completing the square?

Asked on by monique06

1 Answer | Add Yours

crmhaske's profile pic

crmhaske | College Teacher | (Level 3) Associate Educator

Posted on

The quadratic formula is arrived at by completing the square; therefore, theoretically one could use it to isolate the square through some simple rearranging:




Therefore, the square is b/(2a)

With some further rearranging, we can arrive at the quadratic in vertex form:




`h=b/(2a)` and` k=(c-b^2/(4a))` , where (h,k) is the vertex of the parabola.


We’ve answered 319,809 questions. We can answer yours, too.

Ask a question